Apparatus for cooling biscuits.



PATENTBD SEPT. 22, 1903.

e. HERBERT, JR- APPARATUS FOR 000mm BISCUITS.

APPLIOATION FILED AUG. 29. 1902.

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PATENTED SEPT. 22-, 1903.

' HERBERT/J11. APPARATUS FOR 000mm BISCUITS.

JPPLIOATI'ON FILED AUG. 29. 1902.

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PATENTED SEPT. 22, 1'9os.

G. HERBERT, JR. APPARATUS FOR 000mm BISCUITS.

APPLICATION FILED AUG. 29. 1902.

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PATENT OFFICE.

APPARATUS FOR COOLING BISCUITS.

SPECIFICATION forming part of Letters Patent No. 739,310, dated September 22, 1903.

Application filed August 29, 1902. Serial No. 121,470. (No modem To aZZ whom it may concern.-

' Be it known that I, GEORGE HERBERT, J r., manufacturer, a subject of the King of Great Britain, and a resident of Bruce road,

- Pollokshields, Glasgow, Scotland, have invented certain new and useful Improved Ap-.

paratus for Cooling Biscuits, of which the following is a specification.

This invention relates to an apparatus for cooling biscuits after .delivery from the baking-oven.

7 The apparatus may be fitted up as an attachment to a biscuit-packing machine.

The essential featureof the apparatus is that endless traveling bands are used, and

these bands are so arranged that the biscuits Figure 1 is a side'elevation of the apparatus. Fig. 2 is a diagram showing the ar rangement of the endless traveling bands. Fig, 3 is a front view of the biscuit-elevator.

Fig. 4: is an enlarged section, and Fig. 5 a

vator.

apparatus. Fig. 7 is a detail view partly s'ecplan,'of part of the traveling band of the ele- Fig. 6 is a partial cross-section of the tioned, Fig. 8 showsa slight modification.

. In carrying out my inventionl use two endless bands a I), made of canvas or suitable material and which are adapted to run around rollers 0 cl, so arranged that the bands practically form a series of shelves, one below the other. As shown at Figs. 1 and 2, the one band a may be' arranged so as to form, say, six shelves A O'E G'I'K, one below the other, while the'otherbandb may be arranged so as to form five intermediate shelves B D F H J, between the shelves of the first band. The rollers upon which the bands run are made of different sizes, so as to enable this shelf-like, arrangement to be effected. The small rollers are marked 0 and the larger 1 ones (1. At the end of each shelf an air-blast pipe is arranged, and these pipes are each provided with a series of openings, through which a series of air-jets can be delivered 'i can 'be' adjusted so as'to properly stretch the canvas bands by means of screwsic.

The open central part ofthe apparatus has upright side bars Z, which support longitu-v dinal angle-irons m and cross-bars n. The

angle-irons, as shown at Fig. 6, serve as edges to the traveling bands and prevent the biscuits falling off 'thelsides thereof, while the cross-bars prevent any biscuit passing along the'bands in anuprightposition, as is sometimes apt to occur, as these bars catch the top of the biscuit init travel and tumble it over. 4 i r 4 v The band a, after passing round the rollers, forms the lowest shelf K, which (see Fig. 2) is not shown complete, as it passes away to the packing-machine and delivers the cooled biscuits'thereto, and after passing-around a roller onfthis'macliin-e it returns as the part L of the band. The arrows, Fig. 2, indicate how thebandstravel; 'In 1 the bands 1 are shown in dotted lines.

The band a is driven B means of the gearing (5 and bot'tom'rolle'r. cl, at "the" left hand side of the apparatus, from the driving-shaft p by means of chain gear. The band 19 is driven by means of the chain-gear q and the bottom roller d, at the right-hand side of the apparatus, from the shaft 19. Two (or more) of the rollers d at either sidemay be geared together, as indicated at r s, Fig. 1, by meansof chain-gear, so as to driveeach band as evenly as possible. I I

The biscuits are preferably deliveredto the traveling bandsby means, of an elevator.

Thiselevator is attachedto the 'feedingend. of the machine, and consists ofa frame -t,-;in which is mounted at its upper end a smallroller 21. and at its lower enda large roll erin Traveling around these rollers is an endless traveling band w, made of canvas or other suitable material. Secured across this band at intervals apart are studs 00, which may be made of rubber or other suitable material and be secured by bifurcated rivets y. (See Figs. 4c and 5.) Carried 011 the elevator-frame, so that their bristles will bear against the surface of the band 10, are brushes 2'. These brushes may be secured to cross-bars ,2". the bottom of the elevator is a feeding-hopper 25, having a series of teeth I? along its bottom edge. These teeth allow small broken pieces of biscuits to fall down into a receptacle placed on the floor. The elevator is pivoted at its upper end and can be adjusted to the proper angle by means of screws 1;, which work through the sliding bearings of the bottom roller r. This roller is driven by a chain '0 from the shaft 0 of the gear 0.

j is an incline down which the biscuits fall from the top of the elevator onto the top shelf A. p

The whole arrangement is such that as the biscuits are brought from the oven they are placed in the hopper t and are automatically elevated by the band 10, whose studs ac catch the biscuits and lift them up side by side and lying flat on the band. Should two or more biscuits bunch together, then the superabundant ones are swept off by the brushes .2 and fall back into hopper. These brushes also tend to level the biscuits. When the biscuits reach the top of the elevator, they slide down the incline j onto the top shelf A and are carried along to the end, where they turn over and fall onto the second shelf B. They are carried along to the end of this shelf and then turn over and fall down onto the third shelf (1, and so on until they come to the last shelf K, along which they are carried to the end, and then fall down onto the table of the packing-machine or into any suitable receptacle if no packing-machine is used. If desired,the biscuits delivered from the cooling apparatus may be collected in trays of the usual construction for the purpose of being matured before being packed or being placed in the packing-machine. The air from the blastpipes e at the ends of the shelves assists in tilting or turning over the biscuits as they fall from one shelf to the other. The air-jets are delivered at a suitable angle, so as to impinge on the biscuits and turn them as they fall. down. The air in the blast-pipes may be at the ordinary temperature or be cooled down to any temperature that may be thought desirable for eifectin g the rapid cooling of the biscuits. The air-blasts from the pipes pass between the shelves formed by the bands, and thereby further assist in the cooling process. If so desired, air-blasts may simply be delivered from the sides of the apparatus and across and between the shelves and the biscuits be allowed to turn over of their own accord. In this case the pipes would be arranged longitudinally at the sides of the frame, as shown in crosssection at Fig. 8.

The rollers 0 cl may be made hollow and cold or chilled air passed through them from the fan f if so desired.

In hot climates the apparatus may be in closed in a casing or chamber, the air within which could be cooled in any wellknown manner by artificial means.

Of course, if so desired, the elevator may be dispensed with and the biscuits placed on the apparatus by hand.

Having now fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. An apparatus for coolingbiscuits having, in combination, a frame, endless traveling bands upon which the biscuits are placed carried in the frame, said bands being arranged around supporting-rollers in a zigzag fashion so as to form a series of moving shelves one below the other, means for revolving the rollers and causing the bands to travel, air-pipes arranged in the frame at the ends of the shelves for delivering oblique jets of air upon the biscuits in order to assist in turning them over as they fall from one shelf onto the other and means for supplying air to the air-pipes, substantially as described.

2. Anapparatusforcoolingbiscuitshaving, in combination, a frame, endless traveling bands upon which the biscuits to be cooled are placed carried in the frame said bands being arranged so as to form a series of shelves one below the other, angle-irons arranged lon gitudinally in the frame so as to form edges to the bands, bars for supporting the angleirons, and bars arranged across the frame to prevent the biscuits traveling along in an upright position, substantially as described.

3. Anapparatusforcoolingbiscuitshaving, in combination, a frame, endless traveling bands upon which the biscuits to be cooled are placed carried in the frame said bands being arranged so as to formaseries of shelves one below the other, rollers for supporting the bands, means for revolving the rollers and causing the bands to travel, an elevator-frame, an endless band carried by the frame, brushes arranged across the frame and bearing on the band, and means for revolving the band, sub stantially as described.

4. An apparatus forcooling biscuits having, in combination, a frame, endless traveling bands upon which the biscuits to be cooled are placed carried in the frame said bands being arranged so as to formaseries of shelves one below the other, rollers for supporting the bands, means for revolving the rollers and causing the bands to travel, an elevator-frame, an endless band carried by the frame, studs riveted to the band and means for revolving the band, substantially as described.

5. An apparatus for coolingbiscuits having, in combination, a frame, endless traveling bands upon which the biscuits to be cooled are placed carried in the frame said bands bc- IIO one below the other, rollers for supporting the bands, means for revolving the rollers and causing the bands to travel, an elevator-frame, an endless band carried by the frame, a series of brushes arranged across and bearing on the band, studs on the band and means for revolving the band, substantially as described.

7. An apparatus for eoolingbiscuits having, in combination, a frame, endless traveling bands upon which the biscuits to be cooled are placed carried in the frame said bands being arranged so as to forma series of shelves one below the other, rollers for supportingthe Y bands, means for revolving the rollers and causing the bands to travel, an endless-band elevator for delivering the biscuits to the band, and a feed-hopper at the bottom of the elevator said hopper having a seriesof teeth to allow broken pieces of biscuits to fall through, substantially as described.

8. An apparatusforcoolingbiscuitshaving, in combination, a frame, endless traveling bands upon which the biscuits to be cooled are placed carried in the frame said bands being arranged so as to form a series of shelves j one below the other, rollers for supporting the 7 bands, means for revolving the rollers and causing the bands to travel, a pivoted inclined endless-band elevator for delivering biscuits to the bands, and means for adjustingv the angle of the elevator relatively with the frame of the apparatus, substantially as described.

Signed at Glasgow, Scotland, this 7th day of August, l902.-

. GEORGE HERBERT,JR.

Witnesses:

WILLIAM FLEMlNG, J OHN' PRINGLE. 

